Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990scsmp..33.1100l&link_type=abstract
Science in China, Series A - Mathematics, Physics, Astronomy and Technological Sciences (ISSN 1001-6511), vol. 33, Sept. 1990, p
Astronomy and Astrophysics
Astronomy
Power Spectra, Radio Astronomy, Solar Observatories, Solar Oscillations, Stellar Luminosity, Data Processing, Photodiodes, Photoelectricity, Pixels
Scientific paper
Two photoelectric diode arrays (16 x 16 and 32 x 32 pixels, respectively) were used to measure the difference brightness of the center of the sun with respect to the limb of the solar disk in 1986 at wavelengths of 0.7-0.8 micron. The results indicate a period of 160 m and an average amplitude of 0.00008 solar relative intensity unit. A refined value of the oscillation period of 160.0099 m is obtained from the periodic values of the difference brightness observed for 358 days (1870 hr) over the period 1976-1986 at the Crimean Astrophysical Observatory. This is in good agreement with the IR observed value of 160.0100 m (+ or - 6) and a value of 160.010 m (+ or - 1) obtained at the Doppler difference velocity.
Didkovskii L. V.
Kotov Valerii A.
Li Ru-Feng
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